Birgit Remmert (born 4 September 1966) is a German operatic mezzo-soprano and contralto who has appeared in major European opera houses, concert halls and festivals. She has performed title roles such
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bbeda050630a6e57cfd3329b77b1e1f388c003df2fd7ba6e1a5afd24f2aebe. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b93e1e6-1dbf-4869-8706-0a08a4712935.json and https://artists.proofprofile.net/proofs/artist/9b93e1e6-1dbf-4869-8706-0a08a4712935.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beethoven: Symphony No. 9 in D Minor, Op. 125 "Choral": IV. Presto - "O Freunde, nicht diese Töne!" (Ode to Joy)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69db72ea940cac5c01298ccdfb9126fb71c615c68d2567196172f825c403ffc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA809106004.
Beethoven: Symphony No. 9 in D Minor, Op. 125 "Choral": "O Freunde, nicht diese Töne!" (Ode to Joy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59abfc3c3b375307424474359b0dd94ad1cb22582e79166cd9863f222eb61a3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0202794.
Ode an die Freude - die 9. Sinfonie / Europa Hymne (Ode to Joy - Beethoven's Symphony No. 9)
Klassik die man kennen muss! Die größten Werke der Klassischen Musik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561a857202fc377f6c6e9e434fa1b32789094282b2e1590086650236be00dd7d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP621800012.
Harnoncourt - The Complete Beethoven Recordings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69db72ea940cac5c01298ccdfb9126fb71c615c68d2567196172f825c403ffc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA809106004.
Symphony No. 9 in D Minor, Op. 125 "Choral": IV. Presto "O Freunde, nicht diese Töne!"
Beethoven: Ode an die Freude - Sinfonie Nr. 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59abfc3c3b375307424474359b0dd94ad1cb22582e79166cd9863f222eb61a3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0202794.